Forums | MacLife

ok, i'm assuming these are both macs running jaguar.  i don't have a linksys router, but i'm sure it can be done.  i do it with my airport extreme base station.  btw, to do this, your ISP must issue you a Static IP address (only on the broadband line of the mac you want to connect to), this is so that your public IP address doesn't change.
1. on your linksys router , there should be a way to configure port mapping (or port forwarding, not sure what linksys calls it).  this will tell the router to reroute certain public ports to ports on a certain computer on the LAN.  find the LAN ip of your mac and put it in the private ip address section of all the ports you reroute.  now, in the port forwarding options, reroute these ports:
-public port 9 to private port 9 (only if you want the ability to wake up your home mac from work, if you leave it awake, don't do this one)
-public port 427 to private port 427 (this is for AFP)
-public port 548 to private port 548 (also for AFP)
2. make sure that "Personal File Sharing" is turned on in the Sharing preferences. (also, to wake your home mac up remotely, enable it to "Wake for administrative access" in energy sharing prefs)
3. use this free utility called IP to find your WAN ip on your home mac.  (or you can go to www.ipchicken.com to find it). write this down so you can use it at work
4. at work, Connect to Server (command-k or Go menut>Connect to Server in the finder) and type in the ip address that IP or ipchicken gave you.  type in your login name/password.  choose the volume you want to mount and voila.

now, this will only work if the home mac is awake, but there is a way to wake it up from work.  here it is:
1. Make sure you did step 1 completely and have "Wake for administrative access" in the energy saver checked
2. go to the network prefs on your home mac and copy down the ethernet address (will be in this format- 00:00:00:00:00:00) and copy that down so you will have it at work
3. download wake550 and enter in the computer's name, WAN ip address (the same one you use in connect to server to access it when it's awake) into their fields.  enter the ethernet address you have into the hardware address field (make sure you don't copy this or the ip address wrong)
4. click Wake and the computer should wake up.

If your home Mac DOES happen to have a dynamic IP address...
www.no-ip.com is cool because they have a Mac client. Basically, what no-ip.com does is it translates your computer's Dynamic IP into a static, nonchanging name (yourmac.no-ip.com, for example), so you can access it anywhere. So what you'd do is run an FTP server (this is for compatibility, I'm sure you could use AFP or something also), and leave your mac on. When you need to access your files, you go to ftp://yourmac.no-ip.com and it will work. (don't click that link, it won't work )
I personally use No-IP to host my website, because my DSL line isn't a static IP address. It's great.

you might also want to check out this site...

http://www.dyndns.com/

works with dynamic and static ip's